Machine for enameling oval picture-frames



e' UNITED STATESv PATENT CEEICE.

FREDERICK SMITH, OF ALLEGHENY CITY, PENNSYLVANIA.

l MACHINE FOR ENAMEL-ING OVAL PICTURE-FRAMES.

Specification forming part of Letters Patent No. 43,? l5, (lated August 2, 1864.

To all whom it may concern,.-

Be it known that I, FREDERICK SMITH, of Allegheny City, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Machine for Enameling Picture-Frames; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawin gs, and to the letters of referen ce marked thereon.

The nature ot' my invention consists in a' combination and arrangement of a trammel, adjustable cam, and a sliding table, constructed, combined, arranged, and operating in the manner hereinafter described.

To enable others skilled in the art of making machines for enameling picture-frames to make and use my invention, I will proceed to describe its construction and operation.

In the accompanying drawings, Figure represents a side and sectional view combined of my improvement in machines for enameling picture-frames. Fig. 2 represents a top view of the same. Fig. 3 represents a sectional view of the under side of the sliding table and represents-the relation of the adjustable cam to the sliding table.

In the drawings, a represents the base of the machine, furnished with guides d and an opening in the center of it for the axis 4 of the upright piece g.

b represents the slidingtable, which is placed upon the base a, and is furnished with slides c, and has an opening, t, made in the center of it, through which passes the upright piece g, and is also furnished with two cross-pieces, (marked 11,) against which the cam e acts in moving the table b. The adjustable cam e is furnished with an opening or slot, 8,'which is fitted to the lower end of the upright piece g, and is held in the desired position by means of the setscrew f. The trammelz' is furnished with a movable center piece, h, which is fitted to the upper end of the upright piece g, in which are place-holes, (marked I, 2, and 3,) which are used for the purpose of raising and lowering the tram mel to suit the work which may be placed on the sliding table. The trammel is also furnished with a tool-holder, which consists of a sliding head, s', face-piece r, clamp l, and set-screws o. The trammel t' is furnished with a slot, m, in which is placed the movable center piece, h, and tool-holder s,which may be moved to any desired point in the slot a, thereby adapting the tool and trammel to the required work. 5 represents an oval picture-frame place on the sliding table b.

j represents the handle of the trammel The arrangement of the cam e, sliding table b, upright piece g, movable center-piece h, toolholder s, and tool k, and their adaptation to each other will readily be understood by reference to the accompanying drawings. The form, size, and manner of constructing the various parts of my improved machine for enameling oval picture-frames I leave to the good judgment and skill of mechanics.

The machine may be made of wood, iron, or brass, or it may be madeof these articles combined.

The operation of my improvement is as follows: Having all parts constructed, combined, and arranged substantially as herein described and represented, I place the frame which is to be enameled on the sliding table b and secure it in a iiXed position by any suitable device. I then adjust the tool 7c to the frame, arranging it so that it will leave the desired thickness of the enamel on the frame. I then apply the enamel to the frame in the usual manner and give to it the desired form by the use ot' the tool lr, which is swept around by turning the trammel t'. After a sufficient amount ot' enamel has been applied and it has been properly formed on the frame, I remove the trammel with its tool le from 0H the upright piece g. I then remove the enameled frame and secure another frame to the table b, and again adjust the trammel i on the upright piece g, and proceed with the enamelin g process in the manner described. The adjustable cam e is set by means of the screw f, so as to move the table b in proportion to the difference between the long and short diameters of the oval frame. For example, if the long diameter of the frame is two inches greater than the short diameter I set the cam e so that it will move the table b one inch forward and one inch backward. Now, it will be observed that the tool k, will describe a vtrue circle by turning the trammel t', and the movements of the table b will cause the oval frame to move in harmony with said circular motion of the tool 7c. Thus by a combination of the circular motion with a recipro` eating motion I am enabled to make a perfect machine for enameling oval picture-frames.

When the tool lc is `arrangedso as to act or move With the long side of the cam e, as represented in Fig. 1, then the long` diameter of the pictureframe runs in a transversel line to the slot t in the table, as indicated by the dotted lines m, and when the tool lc is arranged so as to act or move With the short side of the cam e, as represented in Fig. 2, then the long diameter of the frame runs lengthwise With the slot t, as indicated by the frame 5. (Shown in Fig. 2.)

The great advantage of my improvement consists in enabling the operator (by the use of my machine) to form a true and perfect facing of enamelon the frame Without reference to any unevenness 0r Want of uniformity of surface or edges which may be in the frame prior to receiving the enamel.

Having thus described the nature, construction, operation, and advantage of my improvementin machinesfor enamelingpicture-frames, what I claim as of my invention is- 1. The use of the adjustable cam e and sliding table b, when used in combination with the base a., upright piece Ag, trammel e', and tool-holder s, constructed, arranged, and operating substantially as herein described, and for the purpose set forth. v

2. The combination of the circular and reciprocating motion, when used in connection with the above device, and for the purpose herein set forth.

FREDERICK SMITH. Witnesses:

J AMEs J. JoHNsToN, ALEXANDER HAYs. 

